MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix84:89:EC:C0:00:00 /28
Vendor addressShinjuku Front Tower 32F, 2-21-1 Kitashinjyuku Shinjuku-ku Tokyo JP 169-0074
Country🇯🇵 Japan
RegisteredMay 20, 2018
Block range84:89:EC:C0:00:00– 84:89:EC:CF:FF:FF
Address capacity1,048,576
AdministrationUniversally administered: its prefix comes from a block registered through the IEEE Registration Authority
TransmissionUnicast: addressed to a single device
SourceIEEE Registration Authority
Address capacity is the size of this registered block, not a count of devices actually manufactured or online. Registration identifies the organization holding the block, not a specific device model or unit.
Curious how a prefix like this turns into a full address? See how MAC addresses are structured →
Example addresses in this block
Where this block sits
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84:89:EC:B0:00:00 /28
EPSa Elektronik & Präzisionsbau Saalfeld GmbH
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84:89:EC:D0:00:00 /28
Price Industries Limited
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
SHINKAWA LTD. holds 1 registered blocks in the IEEE registry, ranking #27,183 of 33,427 organizations by block count.